i would like to buy the following mobo: Gigabyte GA-K8NF9-Ultra Socket939 ATX with chipset NVIDIA nForce4 Ultra / ITE IT8712. My question now is which driver for suse linux 10 should i use? I searched through the nvidea homepage found some drivers but I don't know which the right one is. Can anybody help me?

Are you asking about graphics drivers or NFORCE drivers? Either way, there's only one driver package for graphics, and one for NFORCE in Linux. The only choice is whether you're running an x86 or x86_64 Linux distribution.